72-45+13=12d-2

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Solution for 72-45+13=12d-2 equation: 


Simplifying
72 + -45 + 13 = 12d + -2

Combine like terms: 72 + -45 = 27
27 + 13 = 12d + -2

Combine like terms: 27 + 13 = 40
40 = 12d + -2

Reorder the terms:
40 = -2 + 12d

Solving
40 = -2 + 12d

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Add '-12d' to each side of the equation.
40 + -12d = -2 + 12d + -12d

Combine like terms: 12d + -12d = 0
40 + -12d = -2 + 0
40 + -12d = -2

Add '-40' to each side of the equation.
40 + -40 + -12d = -2 + -40

Combine like terms: 40 + -40 = 0
0 + -12d = -2 + -40
-12d = -2 + -40

Combine like terms: -2 + -40 = -42
-12d = -42

Divide each side by '-12'.
d = 3.5

Simplifying
d = 3.5

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